Say you have 3 lanes of traffic. Each lane is occupied by 100% driverless cars. Let's say, there is an object completely blocking the middle lane, and partial

Say you have 3 lanes of traffic. Each lane is occupied by 100% driverless cars. Let's say, there is an object completely blocking the middle lane, and partially blocking the two outer lanes. What will the driverless cars decide to do? My guess, is they wait there until the road is completely unblocked, there's no way for the cars to understand the proper course of action. It will be great fun to bring absolute gridlock with an empty cardboard box in downtown NYC once this all kicks off. Naturally, by then, card board will be illegal there.